diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 0609c7b29a9..0942f7eec75 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -134637,6 +134637,18 @@
      {}
     ]
    ],
+   "css/css-multicol/change-intrinsic-width.html": [
+    [
+     "css/css-multicol/change-intrinsic-width.html",
+     [
+      [
+       "/css/reference/ref-filled-green-100px-square.xht",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-multicol/column-count-used-001.html": [
     [
      "css/css-multicol/column-count-used-001.html",
@@ -338168,6 +338180,12 @@
      {}
     ]
    ],
+   "css/cssom-view/getClientRects-inline-inline-child.html": [
+    [
+     "css/cssom-view/getClientRects-inline-inline-child.html",
+     {}
+    ]
+   ],
    "css/cssom-view/historical.html": [
     [
      "css/cssom-view/historical.html",
@@ -588279,6 +588297,10 @@
    "434dc52ea3d731bd1393270372294cd007382e59",
    "testharness"
   ],
+  "css/css-multicol/change-intrinsic-width.html": [
+   "3df3e1ebc8f9b5780dc858a878bca13dbedcdb35",
+   "reftest"
+  ],
   "css/css-multicol/column-count-used-001.html": [
    "2949a1996ebae0c48329906ea7ef34c83080e90f",
    "reftest"
@@ -625603,6 +625625,10 @@
    "f1f6fc5abc679d087d221573456eb9219d1a405c",
    "testharness"
   ],
+  "css/cssom-view/getClientRects-inline-inline-child.html": [
+   "9a03ccdbccc80d8a0ce6f701aeaa802b1b4715e4",
+   "testharness"
+  ],
   "css/cssom-view/getClientRects-inline.html": [
    "415e34a6f0430e08441ee32b3f7c0ca8cd11a692",
    "reftest"
@@ -664512,11 +664538,11 @@
    "testharness"
   ],
   "html/semantics/forms/constraints/form-validation-validity-valid.html": [
-   "cec5dcbf0d5cfb340e100a82e723e1d620d16399",
+   "03655ffd2f5ba24b30e6864c8393ecbf36230aef",
    "testharness"
   ],
   "html/semantics/forms/constraints/form-validation-validity-valueMissing.html": [
-   "3c9e4c4cb096bbe93b540c3f704d0d116a055aba",
+   "2e1c666436a19bc759026ebf55df4a17073ecb5d",
    "testharness"
   ],
   "html/semantics/forms/constraints/form-validation-willValidate.html": [
@@ -664532,7 +664558,7 @@
    "testharness"
   ],
   "html/semantics/forms/constraints/support/validator.js": [
-   "48c3a5b40e6bbe06b18dde7f473188a827b7de6a",
+   "33508fb3289be3736f6f467957dc6614bec2bc9b",
    "support"
   ],
   "html/semantics/forms/constraints/tooLong-input-email-delete-manual.html": [
@@ -701572,7 +701598,7 @@
    "support"
   ],
   "resources/chromium/nfc-mock.js": [
-   "4bafc9b0ad8f7f8ad4185914fffef16949695ab3",
+   "2c1724b7592eb1d6e66177544998abbec70fbfe6",
    "support"
   ],
   "resources/chromium/sensor.mojom.js": [
@@ -717860,7 +717886,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/browsers/firefox_android.py": [
-   "33b5d51e54e82adb6cdbe4612263bc30883dd108",
+   "fee528071f68843ab056f513295146685f8f78f4",
    "support"
   ],
   "tools/wptrunner/wptrunner/browsers/ie.py": [
@@ -717936,7 +717962,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/executormarionette.py": [
-   "59f7e865a5b8711fa71c9c8955eca731e0048c3f",
+   "01306397db7944cd0dfadf8f1bf0327dbacf94d6",
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/executoropera.py": [
@@ -717992,7 +718018,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/test-wait.js": [
-   "8a7edb79d62256eef63c71eabd450d42bce7c4d2",
+   "ad08ad7d76fb0299aadedb572193c38c5055e654",
    "support"
   ],
   "tools/wptrunner/wptrunner/executors/testharness_servodriver.js": [
@@ -718012,7 +718038,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/font.py": [
-   "6647a8580be7ab4050bbd37593b2e6595bc3ac72",
+   "daf0a1c1bfa221aa47981d93239021e4aefa74a9",
    "support"
   ],
   "tools/wptrunner/wptrunner/formatters/__init__.py": [
@@ -718244,7 +718270,7 @@
    "support"
   ],
   "tools/wptrunner/wptrunner/wptrunner.py": [
-   "7409dc26560af0be3a397bb73184137d8715811f",
+   "75ce104c7cee335afa2e86592caa2c4caa473bcf",
    "support"
   ],
   "tools/wptrunner/wptrunner/wpttest.py": [
@@ -724608,7 +724634,7 @@
    "manual"
   ],
   "web-nfc/NDEFReader_scan.https.html": [
-   "a9b1d7516173418243c630817eea22fd0bed2046",
+   "17b9fdb8569db230c3a3ded22e0258e4f73a69fc",
    "testharness"
   ],
   "web-nfc/NDEFReader_scan_filter.https.html": [
@@ -724632,7 +724658,7 @@
    "manual"
   ],
   "web-nfc/NDEFWriter_push.https.html": [
-   "4ff0af8fb0b3947595bdf48015ebabce165003ba",
+   "cb6b3941410035c5c5736e13d59fbbfb85f0d4cc",
    "testharness"
   ],
   "web-nfc/README.md": [
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini
new file mode 100644
index 00000000000..e38782d8c85
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini
@@ -0,0 +1,4 @@
+[elementFromPoint-001.html]
+  [CSSOM View - 5 - extensions to the Document interface]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom-view/getClientRects-inline-inline-child.html.ini b/tests/wpt/metadata/css/cssom-view/getClientRects-inline-inline-child.html.ini
new file mode 100644
index 00000000000..8ff7d008595
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/getClientRects-inline-inline-child.html.ini
@@ -0,0 +1,4 @@
+[getClientRects-inline-inline-child.html]
+  [sub element in a child inline box should not be included]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index 9fdb1aa8bf6..52662ab4ad3 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -309,9 +309,6 @@
   [<iframe>: separate response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
@@ -324,15 +321,15 @@
   [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html */*]
-    expected: FAIL
-
   [fetch(): separate response Content-Type: text/plain ]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index d4ba399b762..536384f36e1 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%0C]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20'NosniFF']
+  [X-Content-Type-Options%3A%20%2Cnosniff]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/security/embedded-credentials.tentative.sub.html.ini b/tests/wpt/metadata/fetch/security/embedded-credentials.tentative.sub.html.ini
index 54f7f890b05..0cb858e8b2e 100644
--- a/tests/wpt/metadata/fetch/security/embedded-credentials.tentative.sub.html.ini
+++ b/tests/wpt/metadata/fetch/security/embedded-credentials.tentative.sub.html.ini
@@ -8,8 +8,11 @@
     expected: FAIL
 
   [Embedded credentials are treated as network errors in new windows.]
-    expected: TIMEOUT
-
-  [Embedded credentials matching the top-level are treated as network errors for cross-origin URLs.]
     expected: FAIL
 
+  [Embedded credentials matching the top-level are treated as network errors for cross-origin URLs.]
+    expected: TIMEOUT
+
+  [Embedded credentials matching the top-level are not treated as network errors for relative URLs.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
index 75d75b4cda2..51f8272a6de 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_2.html]
+[traverse_the_history_3.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/creating_browsing_context_test_01.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/creating_browsing_context_test_01.html.ini
new file mode 100644
index 00000000000..16fa2c5cfc1
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/creating_browsing_context_test_01.html.ini
@@ -0,0 +1,4 @@
+[creating_browsing_context_test_01.html]
+  [first argument: absolute url]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
index 6852d7663de..c12c0f8ae48 100644
--- a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
+++ b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/skip-document-with-fragment.html.ini
@@ -1,8 +1,4 @@
 [skip-document-with-fragment.html]
-  expected: TIMEOUT
   [Autofocus elements in iframed documents with URL fragments should be skipped.]
     expected: FAIL
 
-  [Autofocus elements in top-level browsing context's documents with URI fragments should be skipped.]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 5f60c78e73c..f6a7aca3306 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini b/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
index 97f8a0cc51f..6d08beab111 100644
--- a/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
+++ b/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
@@ -10,6 +10,3 @@
   [Verifies the resolution of entry.startTime is at least 20 microseconds.]
     expected: TIMEOUT
 
-  [Verifies the resolution of performance.now() is at least 5 microseconds.]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/resource-timing/crossorigin-sandwich-TAO.sub.html.ini b/tests/wpt/metadata/resource-timing/crossorigin-sandwich-TAO.sub.html.ini
index b4090ef9fe2..1c7ec9ce1db 100644
--- a/tests/wpt/metadata/resource-timing/crossorigin-sandwich-TAO.sub.html.ini
+++ b/tests/wpt/metadata/resource-timing/crossorigin-sandwich-TAO.sub.html.ini
@@ -1,5 +1,4 @@
 [crossorigin-sandwich-TAO.sub.html]
-  expected: ERROR
   [There should be one entry.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/workers/semantics/multiple-workers/005.html.ini b/tests/wpt/metadata/workers/semantics/multiple-workers/005.html.ini
index f584fce5df1..268949ced5c 100644
--- a/tests/wpt/metadata/workers/semantics/multiple-workers/005.html.ini
+++ b/tests/wpt/metadata/workers/semantics/multiple-workers/005.html.ini
@@ -1,5 +1,4 @@
 [005.html]
-  expected: ERROR
   [dedicated worker in shared worker in dedicated worker]
     expected: FAIL
 
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/change-intrinsic-width.html b/tests/wpt/web-platform-tests/css/css-multicol/change-intrinsic-width.html
new file mode 100644
index 00000000000..3df3e1ebc8f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/change-intrinsic-width.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-multicol-1/#pseudo-algorithm">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1037790">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div style="columns:2; column-fill:auto; column-gap:0; width:fit-content; height:100px; background:red;">
+  <div id="firstChild" style="width:200px; height:100px; background:green;"></div>
+  <div style="width:50px; height:100px; background:green;"></div>
+</div>
+<script>
+  document.body.offsetTop;
+  firstChild.style.width = "50px";
+</script>
diff --git a/tests/wpt/web-platform-tests/css/cssom-view/getClientRects-inline-inline-child.html b/tests/wpt/web-platform-tests/css/cssom-view/getClientRects-inline-inline-child.html
new file mode 100644
index 00000000000..9a03ccdbccc
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/cssom-view/getClientRects-inline-inline-child.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/cssom-view-1/#dom-element-getclientrects">
+<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+  <div>
+    <span>test</span>
+    <span id="vertical-align-sub-as-grand-child"
+          title="sub element in a child inline box should not be included">
+      <span>
+        <sub class="not-include" style="vertical-align: sub">subscript</sub>
+      </span>
+    </span>
+    <span>test</span>
+  </div>
+<script>
+testTargetDoesNotInclude('vertical-align-sub-as-grand-child');
+
+function testTargetDoesNotInclude(target) {
+  target = document.getElementById(target);
+  test(() => {
+    let target_rects = target.getClientRects();
+
+    let not_include_rects = [];
+    for (let element of target.querySelectorAll('.not-include')) {
+      for (let rect of element.getClientRects())
+        not_include_rects.push(rect);
+    }
+    for (let rect of target_rects) {
+      for (let not_include_rect of not_include_rects) {
+        assert_rect_not_equals(rect, not_include_rect);
+      }
+    }
+  }, target.title);
+}
+
+function assert_rect_not_equals(rect1, rect2) {
+  assert_false(rectEquals(rect1, rect2),
+               `${rectToString(rect1)} and ${rectToString(rect2)} are not equal`);
+}
+
+function rectEquals(rect1, rect2) {
+  return rect1.x === rect2.x && rect1.y === rect2.y &&
+         rect1.width === rect2.width && rect1.height === rect2.height;
+}
+
+function rectToString(rect) {
+  return `{${rect.x}, ${rect.y} ${rect.width}x${rect.height}}`;
+}
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valid.html b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valid.html
index cec5dcbf0d5..03655ffd2f5 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valid.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valid.html
@@ -15,7 +15,7 @@
       types: ["text", "search", "tel", "password"],
       testData: [
         {conditions: {pattern: "[A-Z]", value: "abc"}, expected: false, name: "[target] validity.valid must be false if validity.patternMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -24,7 +24,7 @@
       testData: [
         {conditions: {pattern: "http://www.example.com", value: "http://www.example.net"}, expected: false, name: "[target] validity.valid must be false if validity.patternMismatch is true"},
         {conditions: {value: "abc"}, expected: false, name: "[target] validity.valid must be false if validity.typeMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -33,7 +33,7 @@
       testData: [
         {conditions: {pattern: "test@example.com", value: "test@example.net"}, expected: false, name: "[target] validity.valid must be false if validity.patternMismatch is true"},
         {conditions: {value: "abc"}, expected: false, name: "[target] validity.valid must be false if validity.typeMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -43,7 +43,7 @@
         {conditions: {max: "2000-01-01T12:00:00", value: "2001-01-01T12:00:00"}, expected: false, name: "[target] validity.valid must be false if validity.rangeOverflow is true"},
         {conditions: {min: "2001-01-01T12:00:00", value: "2000-01-01T12:00:00"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         {conditions: {step: 2 * 60 * 1000, value: "2001-01-01T12:03:00"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -53,7 +53,7 @@
         {conditions: {max: "2000-01-01", value: "2001-01-01"}, expected: false, name: "[target] validity.valid must be false if validity.rangeOverflow is true"},
         {conditions: {min: "2001-01-01", value: "2000-01-01"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         {conditions: {step: 2 * 1 * 86400000, value: "2000-01-03"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -64,7 +64,7 @@
         {conditions: {min: "2001-01", value: "2000-01"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         // Step checks that "months since Jan 1970" is evenly divisible by `step`
         {conditions: {step: 3, value: "2001-02"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -74,7 +74,7 @@
         {conditions: {max: "2000-W01", value: "2001-W01"}, expected: false, name: "[target] validity.valid must be false if validity.rangeOverflow is true"},
         {conditions: {min: "2001-W01", value: "2000-W01"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         {conditions: {step: 2 * 1 * 604800000, value: "2001-W03"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -84,7 +84,7 @@
         {conditions: {max: "12:00:00", value: "13:00:00"}, expected: false, name: "[target] validity.valid must be false if validity.rangeOverflow is true"},
         {conditions: {min: "12:00:00", value: "11:00:00"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         {conditions: {step: 2 * 60 * 1000, value: "12:03:00"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -94,7 +94,7 @@
         {conditions: {max: "5", value: "6"}, expected: false, name: "[target] validity.valid must be false if validity.rangeOverflow is true"},
         {conditions: {min: "5", value: "4"}, expected: false, name: "[target] validity.valid must be false if validity.rangeUnderflow is true"},
         {conditions: {step: 2 * 1 * 1, value: "3"}, expected: false, name: "[target] validity.valid must be false if validity.stepMismatch is true"},
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     },
     {
@@ -122,7 +122,7 @@
       tag: "textarea",
       types: [],
       testData: [
-        {conditions: {required: true, value: ""}, expected: false, name: "[target] validity.valid must be false if validity.valueMissing is true"}
+        {conditions: {required: true, value: ""}, expected: false, expectedImmutable: true, name: "[target] validity.valid must be false if validity.valueMissing is true"}
       ]
     }
   ];
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valueMissing.html b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valueMissing.html
index 3c9e4c4cb09..2e1c666436a 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valueMissing.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/form-validation-validity-valueMissing.html
@@ -16,7 +16,7 @@
       testData: [
         {conditions: {required: false, value: ""}, expected: false, name: "[target] The required attribute is not set"},
         {conditions: {required: true, value: "abc"}, expected: false, name: "[target] The value is not empty and required is true"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value is empty and required is true"}
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value is empty and required is true"}
       ]
     },
     {
@@ -27,13 +27,13 @@
         {conditions: {required: true, value: "2000-12-10T12:00:00"}, expected: false, name: "[target] Valid local date and time string(2000-12-10T12:00:00)"},
         {conditions: {required: true, value: "2000-12-10 12:00"}, expected: false, name: "[target] Valid local date and time string(2000-12-10 12:00)"},
         {conditions: {required: true, value: "1979-10-14T12:00:00.001"}, expected: false, name: "[target] Valid local date and time string(1979-10-14T12:00:00.001)"},
-        {conditions: {required: true, value: 1234567}, expected: true, name: "[target] The value attribute is a number(1234567)"},
-        {conditions: {required: true, value: new Date()}, expected: true, name: "[target] The value attribute is a Date object"},
-        {conditions: {required: true, value: "1979-10-99 99:99"}, expected: true, name: "[target] Invalid local date and time string(1979-10-99 99:99)"},
+        {conditions: {required: true, value: 1234567}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a number(1234567)"},
+        {conditions: {required: true, value: new Date()}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a Date object"},
+        {conditions: {required: true, value: "1979-10-99 99:99"}, expected: true, expectedImmutable: false, name: "[target] Invalid local date and time string(1979-10-99 99:99)"},
         {conditions: {required: true, value: "1979-10-14 12:00:00"}, expected: false, name: "[target] Valid local date and time string(1979-10-14 12:00:00)"},
-        {conditions: {required: true, value: "2001-12-21  12:00"}, expected: true, name: "[target] Invalid local date and time string(2001-12-21  12:00)-two white space"},
-        {conditions: {required: true, value: "abc"}, expected: true, name: "[target] the value attribute is a string(abc)"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: "2001-12-21  12:00"}, expected: true, expectedImmutable: false, name: "[target] Invalid local date and time string(2001-12-21  12:00)-two white space"},
+        {conditions: {required: true, value: "abc"}, expected: true, expectedImmutable: false, name: "[target] the value attribute is a string(abc)"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -43,12 +43,12 @@
         {conditions: {required: false, value: ""}, expected: false, name: "[target] The required attribute is not set"},
         {conditions: {required: true, value: "2000-12-10"}, expected: false, name: "[target] Valid date string(2000-12-10)"},
         {conditions: {required: true, value: "9999-01-01"}, expected: false, name: "[target] Valid date string(9999-01-01)"},
-        {conditions: {required: true, value: 1234567}, expected: true, name: "[target] The value attribute is a number(1234567)"},
-        {conditions: {required: true, value: new Date()}, expected: true, name: "[target] The value attribute is a Date object"},
-        {conditions: {required: true, value: "9999-99-99"}, expected: true, name: "[target] Invalid date string(9999-99-99)"},
-        {conditions: {required: true, value: "37/01/01"}, expected: true, name: "[target] Invalid date string(37-01-01)"},
-        {conditions: {required: true, value: "2000/01/01"}, expected: true, name: "[target] Invalid date string(2000/01/01)"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: 1234567}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a number(1234567)"},
+        {conditions: {required: true, value: new Date()}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a Date object"},
+        {conditions: {required: true, value: "9999-99-99"}, expected: true, expectedImmutable: false, name: "[target] Invalid date string(9999-99-99)"},
+        {conditions: {required: true, value: "37/01/01"}, expected: true, expectedImmutable: false, name: "[target] Invalid date string(37-01-01)"},
+        {conditions: {required: true, value: "2000/01/01"}, expected: true, expectedImmutable: false, name: "[target] Invalid date string(2000/01/01)"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -58,12 +58,12 @@
         {conditions: {required: false, value: ""}, expected: false, name: "[target] The required attribute is not set"},
         {conditions: {required: true, value: "2000-12"}, expected: false, name: "[target] Valid month string(2000-12)"},
         {conditions: {required: true, value: "9999-01"}, expected: false, name: "[target] Valid month string(9999-01)"},
-        {conditions: {required: true, value: 1234567}, expected: true, name: "[target] The value attribute is a number(1234567)"},
-        {conditions: {required: true, value: new Date()}, expected: true, name: "[target] The value attribute is a Date object"},
-        {conditions: {required: true, value: "2000-99"}, expected: true, name: "[target] Invalid month string(2000-99)"},
-        {conditions: {required: true, value: "37-01"}, expected: true, name: "[target] Invalid month string(37-01)"},
-        {conditions: {required: true, value: "2000/01"}, expected: true, name: "[target] Invalid month string(2000/01)"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: 1234567}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a number(1234567)"},
+        {conditions: {required: true, value: new Date()}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a Date object"},
+        {conditions: {required: true, value: "2000-99"}, expected: true, expectedImmutable: false, name: "[target] Invalid month string(2000-99)"},
+        {conditions: {required: true, value: "37-01"}, expected: true, expectedImmutable: false, name: "[target] Invalid month string(37-01)"},
+        {conditions: {required: true, value: "2000/01"}, expected: true, expectedImmutable: false, name: "[target] Invalid month string(2000/01)"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -73,12 +73,12 @@
         {conditions: {required: false, value: ""}, expected: false, name: "[target] The required attribute is not set"},
         {conditions: {required: true, value: "2000-W12"}, expected: false, name: "[target] Valid week string(2000-W12)"},
         {conditions: {required: true, value: "9999-W01"}, expected: false, name: "[target] Valid week string(9999-W01)"},
-        {conditions: {required: true, value: 1234567}, expected: true, name: "[target] The value attribute is a number(1234567)"},
-        {conditions: {required: true, value: new Date()}, expected: true, name: "[target] The value attribute is a Date object"},
-        {conditions: {required: true, value: "2000-W99"}, expected: true, name: "[target] Invalid week string(2000-W99)"},
-        {conditions: {required: true, value: "2000-W00"}, expected: true, name: "[target] invalid week string(2000-W00)"},
-        {conditions: {required: true, value: "2000-w01"}, expected: true, name: "[target] invalid week string(2000-w01)"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: 1234567}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a number(1234567)"},
+        {conditions: {required: true, value: new Date()}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a Date object"},
+        {conditions: {required: true, value: "2000-W99"}, expected: true, expectedImmutable: false, name: "[target] Invalid week string(2000-W99)"},
+        {conditions: {required: true, value: "2000-W00"}, expected: true, expectedImmutable: false, name: "[target] invalid week string(2000-W00)"},
+        {conditions: {required: true, value: "2000-w01"}, expected: true, expectedImmutable: false, name: "[target] invalid week string(2000-w01)"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -91,13 +91,13 @@
         {conditions: {required: true, value: "12:00:00.001"}, expected: false, name: "[target] Valid time string(12:00:60.001)"},
         {conditions: {required: true, value: "12:00:00.01"}, expected: false, name: "[target] Valid time string(12:00:60.01)"},
         {conditions: {required: true, value: "12:00:00.1"}, expected: false, name: "[target] Valid time string(12:00:60.1)"},
-        {conditions: {required: true, value: 1234567}, expected: true, name: "[target] The value attribute is a number(1234567)"},
-        {conditions: {required: true, value: new Date()}, expected: true, name: "[target] The value attribute is a time object"},
-        {conditions: {required: true, value: "25:00:00"}, expected: true, name: "[target] Invalid time string(25:00:00)"},
-        {conditions: {required: true, value: "12:60:00"}, expected: true, name: "[target] Invalid time string(12:60:00)"},
-        {conditions: {required: true, value: "12:00:60"}, expected: true, name: "[target] Invalid time string(12:00:60)"},
-        {conditions: {required: true, value: "12:00:00:001"}, expected: true, name: "[target] Invalid time string(12:00:00:001)"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: 1234567}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a number(1234567)"},
+        {conditions: {required: true, value: new Date()}, expected: true, expectedImmutable: false, name: "[target] The value attribute is a time object"},
+        {conditions: {required: true, value: "25:00:00"}, expected: true, expectedImmutable: false, name: "[target] Invalid time string(25:00:00)"},
+        {conditions: {required: true, value: "12:60:00"}, expected: true, expectedImmutable: false, name: "[target] Invalid time string(12:60:00)"},
+        {conditions: {required: true, value: "12:00:60"}, expected: true, expectedImmutable: false, name: "[target] Invalid time string(12:00:60)"},
+        {conditions: {required: true, value: "12:00:00:001"}, expected: true, expectedImmutable: false, name: "[target] Invalid time string(12:00:00:001)"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -110,11 +110,11 @@
         {conditions: {required: true, value: "123.01e-10"}, expected: false, name: "[target] Value is a number in scientific notation form(e is in lowercase)"},
         {conditions: {required: true, value: "123.01E+10"}, expected: false, name: "[target] Value is a number in scientific notation form(E is in uppercase)"},
         {conditions: {required: true, value: "-0"}, expected: false, name: "[target] Value is -0"},
-        {conditions: {required: true, value: " 123 "}, expected: true, name: "[target] Value is a number with some white spaces"},
-        {conditions: {required: true, value: Math.pow(2, 1024)}, expected: true, name: "[target] Value is Math.pow(2, 1024)"},
-        {conditions: {required: true, value: Math.pow(-2, 1024)}, expected: true, name: "[target] Value is Math.pow(-2, 1024)"},
-        {conditions: {required: true, value: "abc"}, expected: true, name: "[target] Value is a string that cannot be converted to a number"},
-        {conditions: {required: true, value: ""}, expected: true, name: "[target] The value attribute is empty string"}
+        {conditions: {required: true, value: " 123 "}, expected: true, expectedImmutable: false, name: "[target] Value is a number with some white spaces"},
+        {conditions: {required: true, value: Math.pow(2, 1024)}, expected: true, expectedImmutable: false, name: "[target] Value is Math.pow(2, 1024)"},
+        {conditions: {required: true, value: Math.pow(-2, 1024)}, expected: true, expectedImmutable: false, name: "[target] Value is Math.pow(-2, 1024)"},
+        {conditions: {required: true, value: "abc"}, expected: true, expectedImmutable: false, name: "[target] Value is a string that cannot be converted to a number"},
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value attribute is empty string"}
       ]
     },
     {
@@ -159,7 +159,7 @@
       testData: [
         {conditions: {required: false, value: ""}, expected: false, name: "[target] The required attribute is not set"},
         {conditions: {required: true, value: "abc"}, expected: false, name: "[target] The value is not empty"},
-        {conditions: {required: true, value: ""}, expected: true  , name: "[target] The value is empty"}
+        {conditions: {required: true, value: ""}, expected: true, expectedImmutable: false, name: "[target] The value is empty"}
       ]
     }
   ];
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/support/validator.js b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/support/validator.js
index 48c3a5b40e6..33508fb3289 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/constraints/support/validator.js
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/constraints/support/validator.js
@@ -5,8 +5,8 @@ var validator = {
     test(function() {
       self.pre_check(ctl, 'tooLong');
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.tooLong,
               'The validity.tooLong should be true' + condStr);
@@ -23,8 +23,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "tooShort");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.tooShort,
               'The validity.tooShort should be true' + condStr);
@@ -41,8 +41,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "patternMismatch");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.patternMismatch,
               'The validity.patternMismatch should be true' + condStr);
@@ -59,8 +59,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "valueMissing");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.valueMissing,
               'The validity.valueMissing should be true' + condStr);
@@ -77,8 +77,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "typeMismatch");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.typeMismatch,
               'The validity.typeMismatch should be true' + condStr);
@@ -95,8 +95,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "rangeOverflow");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.rangeOverflow,
               'The validity.rangeOverflow should be true' + condStr);
@@ -113,8 +113,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "rangeUnderflow");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.rangeUnderflow,
               'The validity.rangeUnderflow should be true' + condStr);
@@ -131,8 +131,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "stepMismatch");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.stepMismatch,
               'The validity.stepMismatch should be true' + condStr);
@@ -149,8 +149,8 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "badInput");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.badInput,
               'The validity.badInput should be true' + condStr);
@@ -167,14 +167,14 @@ var validator = {
     test(function () {
       self.pre_check(ctl, "customError");
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected) {
+        const {ctl, expected, condStr} = val;
+        if (expected) {
           assert_true(
               ctl.validity.customError,
               'The validity.customError attribute should be true' + condStr);
           // validationMessage returns the empty string if ctl is barred from
-          // constraint validation, which happens if ctl is disabled.
-          if (ctl.disabled) {
+          // constraint validation, which happens if ctl is disabled or readOnly.
+          if (ctl.disabled || ctl.readOnly) {
             assert_equals(
                 ctl.validationMessage, '',
                 'The validationMessage attribute must be empty' + condStr);
@@ -200,8 +200,8 @@ var validator = {
     var self = this;
     test(function () {
       self.iterate_over(ctl, data).forEach(function(val) {
-        const {ctl, data, condStr} = val;
-        if (data.expected)
+        const {ctl, expected, condStr} = val;
+        if (expected)
           assert_true(
               ctl.validity.valid,
               'The validity.valid should be true' + condStr);
@@ -389,39 +389,54 @@ var validator = {
   },
 
   iterate_over: function(ctl, data) {
-    // Iterate over normal, disabled, readonly, and both.
+    // Iterate over normal, disabled, readonly, and both (if applicable).
+    var ctlNormal = ctl.cloneNode(true);
+    this.set_conditions(ctlNormal, data.conditions);
+    if (data.dirty)
+      this.set_dirty(ctlNormal);
+
     var ctlDisabled = ctl.cloneNode(true);
     this.set_conditions(ctlDisabled, data.conditions);
     if (data.dirty)
       this.set_dirty(ctlDisabled);
     ctlDisabled.disabled = true;
 
-    var ctlReadonly = ctl.cloneNode(true);
-    this.set_conditions(ctlReadonly, data.conditions);
-    if (data.dirty)
-      this.set_dirty(ctlReadonly);
-    ctlReadonly.readonly = true;
+    var expectedImmutable =
+      data.expectedImmutable !== undefined ? data.expectedImmutable : data.expected;
 
-    var ctlBoth = ctl.cloneNode(true);
-    this.set_conditions(ctlBoth, data.conditions);
-    if (data.dirty)
-      this.set_dirty(ctlBoth);
-    ctlBoth.disabled = true;
-    ctlBoth.readonly = true;
+    var variants = [
+      {ctl: ctlNormal, expected: data.expected, condStr: '.'},
+      {ctl: ctlDisabled, expected: expectedImmutable, condStr: ', when control is disabled.'},
+    ];
 
-    ctl = ctl.cloneNode(true);
-    this.set_conditions(ctl, data.conditions);
+    if ('readOnly' in ctl) {
+      var ctlReadonly = ctl.cloneNode(true);
+      this.set_conditions(ctlReadonly, data.conditions);
+      if (data.dirty)
+        this.set_dirty(ctlReadonly);
+      ctlReadonly.readOnly = true;
 
-    return [
-      {ctl: ctl, data: data, condStr: '.'},
-      {ctl: ctlDisabled, data: data, condStr: ', when control is disabled.'},
-      {ctl: ctlReadonly, data: data, condStr: ', when control is readonly.'},
-      {
+      var ctlBoth = ctl.cloneNode(true);
+      this.set_conditions(ctlBoth, data.conditions);
+      if (data.dirty)
+        this.set_dirty(ctlBoth);
+      ctlBoth.disabled = true;
+      ctlBoth.readOnly = true;
+
+      variants.push({
+        ctl: ctlReadonly,
+        expected: expectedImmutable,
+        condStr: ', when control is readonly.'
+      });
+
+      variants.push({
         ctl: ctlBoth,
-        data: data,
+        expected: expectedImmutable,
         condStr: ', when control is disabled & readonly.'
-      },
-    ]
+      });
+    }
+
+    return variants;
   },
 
   run_test: function(testee, method) {
diff --git a/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js b/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
index 4bafc9b0ad8..2c1724b7592 100644
--- a/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
+++ b/tests/wpt/web-platform-tests/resources/chromium/nfc-mock.js
@@ -170,6 +170,7 @@ var WebNFCTest = (() => {
       this.reading_messages_ = [];
       this.operations_suspended_ = false;
       this.is_formatted_tag_ = false;
+      this.data_transfer_failed_ = false;
     }
 
     // NFC delegate functions.
@@ -192,6 +193,9 @@ var WebNFCTest = (() => {
           // Resolves with NotAllowedError if there are NDEF records on the device
           // and overwrite is false.
           resolve(createNDEFError(device.mojom.NDEFErrorType.NOT_ALLOWED));
+        } else if (this.data_transfer_failed_) {
+          // Resolves with NetworkError if data transfer fails.
+          resolve(createNDEFError(device.mojom.NDEFErrorType.IO_ERROR));
         } else {
           resolve(createNDEFError(null));
         }
@@ -290,6 +294,7 @@ var WebNFCTest = (() => {
       this.operations_suspended_ = false;
       this.cancelPendingPushOperation();
       this.is_formatted_tag_ = false;
+      this.data_transfer_failed_ = false;
     }
 
     cancelPendingPushOperation() {
@@ -365,6 +370,10 @@ var WebNFCTest = (() => {
     setIsFormattedTag(isFormatted) {
       this.is_formatted_tag_ = isFormatted;
     }
+
+    simulateDataTransferFails() {
+      this.data_transfer_failed_ = true;
+    }
   }
 
   let testInternal = {
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
index 33b5d51e54e..fee528071f6 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
@@ -8,7 +8,8 @@ from .base import (get_free_port,
                    cmd_arg,
                    browser_command)
 from ..executors.executormarionette import (MarionetteTestharnessExecutor,  # noqa: F401
-                                            MarionetteRefTestExecutor)  # noqa: F401
+                                            MarionetteRefTestExecutor,  # noqa: F401
+                                            MarionetteCrashtestExecutor)  # noqa: F401
 from .firefox import (get_timeout_multiplier,  # noqa: F401
                       run_info_extras as fx_run_info_extras,
                       update_properties,  # noqa: F401
@@ -20,7 +21,8 @@ __wptrunner__ = {"product": "firefox_android",
                  "check_args": "check_args",
                  "browser": "FirefoxAndroidBrowser",
                  "executor": {"testharness": "MarionetteTestharnessExecutor",
-                              "reftest": "MarionetteRefTestExecutor"},
+                              "reftest": "MarionetteRefTestExecutor",
+                              "crashtest": "MarionetteCrashtestExecutor"},
                  "browser_kwargs": "browser_kwargs",
                  "executor_kwargs": "executor_kwargs",
                  "env_extras": "env_extras",
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
index 59f7e865a5b..01306397db7 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -991,15 +991,16 @@ class MarionetteCrashtestExecutor(CrashtestExecutor):
         if not success:
             status = data[0]
 
+        extra = None
         if self.debug and (success or status not in ("CRASH", "INTERNAL-ERROR")):
             assertion_count = self.protocol.asserts.get()
             if assertion_count is not None:
-                data["extra"] = {"assertion_count": assertion_count}
+                extra = {"assertion_count": assertion_count}
 
         if success:
             return self.convert_result(test, data)
 
-        return (test.result_cls(**data), [])
+        return (test.result_cls(extra=extra, *data), [])
 
     def do_crashtest(self, protocol, url, timeout):
         if self.protocol.coverage.is_enabled:
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/test-wait.js b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/test-wait.js
index 8a7edb79d62..ad08ad7d76f 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/test-wait.js
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/test-wait.js
@@ -32,7 +32,8 @@ function wait_paints() {
 }
 
 function screenshot_if_ready() {
-  if (root.classList.contains("%(classname)s") &&
+  if (root &&
+      root.classList.contains("%(classname)s") &&
       observer === null) {
     observer = new MutationObserver(wait_paints);
     observer.observe(root, {attributes: true});
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/font.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/font.py
index 6647a8580be..daf0a1c1bfa 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/font.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/font.py
@@ -1,5 +1,4 @@
 import ctypes
-import logging
 import os
 import platform
 import plistlib
@@ -12,7 +11,8 @@ SYSTEM = platform.system().lower()
 
 
 class FontInstaller(object):
-    def __init__(self, font_dir=None, **fonts):
+    def __init__(self, logger, font_dir=None, **fonts):
+        self.logger = logger
         self.font_dir = font_dir
         self.installed_fonts = False
         self.created_dir = False
@@ -26,14 +26,13 @@ class FontInstaller(object):
             font_name = font_path.split('/')[-1]
             install = getattr(self, 'install_%s_font' % SYSTEM, None)
             if not install:
-                logging.warning('Font installation not supported on %s',
-                                SYSTEM)
+                self.logger.warning('Font installation not supported on %s' % SYSTEM)
                 return False
             if install(font_name, font_path):
                 self.installed_fonts = True
-                logging.info('Installed font: %s', font_name)
+                self.logger.info('Installed font: %s' % font_name)
             else:
-                logging.warning('Unable to install font: %s', font_name)
+                self.logger.warning('Unable to install font: %s' % font_name)
 
     def __exit__(self, exc_type, exc_val, exc_tb):
         if not self.installed_fonts:
@@ -43,12 +42,12 @@ class FontInstaller(object):
             font_name = font_path.split('/')[-1]
             remove = getattr(self, 'remove_%s_font' % SYSTEM, None)
             if not remove:
-                logging.warning('Font removal not supported on %s', SYSTEM)
+                self.logger.warning('Font removal not supported on %s' % SYSTEM)
                 return False
             if remove(font_name, font_path):
-                logging.info('Removed font: %s', font_name)
+                self.logger.info('Removed font: %s' % font_name)
             else:
-                logging.warning('Unable to remove font: %s', font_name)
+                self.logger.warning('Unable to remove font: %s' % font_name)
 
     def install_linux_font(self, font_name, font_path):
         if not self.font_dir:
@@ -62,7 +61,7 @@ class FontInstaller(object):
             fc_cache_returncode = call('fc-cache')
             return not fc_cache_returncode
         except OSError:  # If fontconfig doesn't exist, return False
-            logging.error('fontconfig not available on this Linux system.')
+            self.logger.error('fontconfig not available on this Linux system.')
             return False
 
     def install_darwin_font(self, font_name, font_path):
@@ -110,7 +109,7 @@ class FontInstaller(object):
             fc_cache_returncode = call('fc-cache')
             return not fc_cache_returncode
         except OSError:  # If fontconfig doesn't exist, return False
-            logging.error('fontconfig not available on this Linux system.')
+            self.logger.error('fontconfig not available on this Linux system.')
             return False
 
     def remove_darwin_font(self, font_name, _):
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
index 7409dc26560..75ce104c7ce 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wptrunner.py
@@ -150,6 +150,7 @@ def run_tests(config, test_paths, product, **kwargs):
 
         if kwargs["install_fonts"]:
             env_extras.append(FontInstaller(
+                logger,
                 font_dir=kwargs["font_dir"],
                 ahem=os.path.join(test_paths["/"]["tests_path"], "fonts/Ahem.ttf")
             ))
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
index a9b1d751617..17b9fdb8569 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFReader_scan.https.html
@@ -207,4 +207,27 @@ nfc_test(async (t, mockNFC) => {
 }, "Test that NDEFReader.onreading should be fired on an unformatted NFC tag \
 with empty records array for NDEFMessage.");
 
+nfc_test(async (t, mockNFC) => {
+  const reader = new NDEFReader();
+  const controller = new AbortController();
+  const message = createMessage([createTextRecord(test_text_data),
+                                createMimeRecordFromJson(test_json_data),
+                                createMimeRecord(test_buffer_data),
+                                createUnknownRecord(test_buffer_data),
+                                createUrlRecord(test_url_data),
+                                createUrlRecord(test_url_data, true),
+                                createRecord('w3.org:xyz', test_buffer_data)],
+                                test_message_origin);
+  const readerWatcher = new EventWatcher(t, reader, ["reading", "error"]);
+  const promise = readerWatcher.wait_for("reading").then(event => {
+    assert_equals(event.serialNumber, fake_tag_serial_number);
+    assertWebNDEFMessagesEqual(event.message, new NDEFMessage(message));
+    controller.abort();
+  });
+  await reader.scan({signal : controller.signal});
+
+  mockNFC.setReadingMessage(message);
+  await promise;
+}, "Test that reading message with multiple records should succeed.");
+
 </script>
diff --git a/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html b/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
index 4ff0af8fb0b..cb6b3941410 100644
--- a/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
+++ b/tests/wpt/web-platform-tests/web-nfc/NDEFWriter_push.https.html
@@ -276,7 +276,7 @@ nfc_test(async () => {
 
 nfc_test(async (t, mockNFC) => {
   const writer = new NDEFWriter();
-  let message = createMessage([createTextRecord(test_text_data),
+  const message = createMessage([createTextRecord(test_text_data),
                                createMimeRecordFromJson(test_json_data),
                                createMimeRecord(test_buffer_data),
                                createUnknownRecord(test_buffer_data),
@@ -308,9 +308,12 @@ nfc_test(async (t, mockNFC) => {
   assertNDEFMessagesEqual(buffer_view, mockNFC.pushedMessage());
 }, "Test that NDEFWriter.push succeeds when message is ArrayBufferView.");
 
-nfc_test(async () => {
+nfc_test(async (t, mockNFC) => {
   const writer = new NDEFWriter();
   await writer.push(createMessage([createRecord('empty')]));
+  const receivedMessage = mockNFC.pushedMessage();
+  assert_equals(receivedMessage.data.length, 1);
+  assert_equals(receivedMessage.data[0].recordType, 'empty', 'recordType');
 }, "NDEFWriter.push with 'empty' record should succeed.");
 
 nfc_test(async (t, mockNFC) => {
@@ -433,4 +436,11 @@ nfc_test(async (t, mockNFC) => {
   await promise_rejects(t, 'NotAllowedError', p);
 }, "NDEFWriter.push should fail when there are NDEF records on the NFC device \
 and NDEFPushOptions.overwrite is false.");
+
+nfc_test(async (t, mockNFC) => {
+  const writer = new NDEFWriter();
+  mockNFC.simulateDataTransferFails();
+  await promise_rejects(t, 'NetworkError', writer.push(test_text_data));
+}, "NDEFWriter.push should fail with NetworkError when NFC data transfer fails.");
+
 </script>